Phytoplankton Production and Decomposition Characteristics in Water Bodies Differing in the Degree of Their Contamination by Inorganic Compounds of Nitrogen and Phosphorus

2019 ◽  
Vol 55 (3) ◽  
pp. 29-43 ◽  
Author(s):  
P. D. Klochenko ◽  
T. F. Shevchenko ◽  
I. N. Nezbrytskaya ◽  
Ye. P. Belous ◽  
Z. N. Gorbunova ◽  
...  
Keyword(s):  
Inorganic Compounds ◽  
Water Bodies ◽  
Phytoplankton Production ◽  
Nitrogen And Phosphorus

Nutrients Pollution in Water Bodies

2017 ◽  
pp. 21-42
Author(s):  
Ángeles Val del Río ◽  
Paula Carrera Fernández ◽  
José Luis Campos Gómez ◽  
Anuska Mosquera-Corral
Keyword(s):  
Climate Change ◽  
United States ◽  
Human Health ◽  
The United States ◽  
Water Bodies ◽  
Nitrogen And Phosphorus ◽  
International Conventions ◽  
Laws And Regulations

The pollution of water bodies by an excess of nutrients (N and P) is a worldwide problem with effects on the human health, ecosystems status, climate change, etc. To face with this important issue different regulations were promulgated by the countries, sometimes based on the results from international conventions and programmes. In this chapter, a review of the laws and regulations that affect the discharge of nitrogen and phosphorus is addressed, focused in the case of Europe and the United States. Finally, a brief explanation about international initiatives was performed to understand the global framework concerning nutrients pollution.

The Treatment Methods Review of Source-Separated Urine

2013 ◽  
Vol 295-298 ◽  
pp. 1701-1705 ◽  
Author(s):  
Lei Wang ◽  
Fu Guo Qiu
Keyword(s):  
Source Separation ◽  
Scarce Resource ◽  
Water Bodies ◽  
Sustainable Utilization ◽  
Separation System ◽  
Nitrogen And Phosphorus ◽  
Treatment Methods ◽  
Treatment Techniques ◽  
Research Outcomes ◽  
Struvite Precipitation

The urine-diverting toilet separates the urine and faeces and collects urine alone at the source. This technique can not only collect and make the most use of nutrients in urine, but also reduce the pollutants load on water bodies. Because of the valuable benefits of urine-source separation system, many researchers have done a lot of study in the global scope and obtained many results on this techniques. Currently studies focus on extracting struvite precipitation from urine which can synchronously recover nitrogen and phosphorus. Because phosphorus is a scarce resource and most phosphate resources are going to the bottom of sea. The recovery of struvite can realize the sustainable utilization of phosphorus resources. This paper reviews the latest research outcomes on urine diverting and treatment techniques.

scholarly journals Influence of Different Factors on Productivity of Reed Growths

2015 ◽  
Vol 1 ◽  
pp. 106
Author(s):  
Edgars Čubars ◽  
Gotfrīds Noviks
Keyword(s):  
Water Body ◽  
Total Concentration ◽  
Regression Equation ◽  
Water Bodies ◽  
Winter Period ◽  
Nitrogen And Phosphorus ◽  
Factors Influencing ◽  
Artificial Water Bodies ◽  
Growing Conditions ◽  
Artificial Water

The study shows results of research on reed productivity and on factors influencing this productivity. The research was performed during winter period from 2010 until 2012 in 23 natural and artificial water bodies of Latvia. The author of this study analyzed indexes of reed growth productivity and found regularities that statistically significantly (p less then 0,05) explain changes of reed productivity in water bodies depending on individual reed growing conditions in each water body. It is established that the productivity of reed growth depends on the amount of nutrients in the water of water body and that this productivity rises if the total concentration of nitrogen and phosphorus in the water is increased. The reed productivity is lower in clearer water. This parameter may be used in order to evaluate the amount of extractable biomass. The coherence is characterized by statistically significant (p less then 0,05) regression equation.

scholarly journals Drivers of nitrogen and phosphorus dynamics in a groundwater-fed urban catchment revealed by high frequency monitoring

2020 ◽  
Author(s):  
Liang Yu ◽  
Joachim C. Rozemeijer ◽  
Hans Peter Broers ◽  
Boris M. van Breukelen ◽  
Jack J. Middelburg ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Column ◽  
High Frequency ◽  
Water Bodies ◽  
Organic N ◽  
Hydrological Process ◽  
Nitrogen And Phosphorus ◽  
Urban Catchment ◽  
Event Scale ◽  
Frequency Monitoring

Abstract. Eutrophication of water bodies has been a problem causing severe degradation of water quality in cities. To gain mechanistic understanding of the temporal dynamics of nitrogen and phosphorus in a groundwater fed low-lying urban polder, we applied high frequency monitoring in Geuzenveld, a polder in the city of Amsterdam. The high frequency monitoring equipment was installed at the pumping station where water leaves the polder. From 2016 March to 2017 June, total phosphorus (TP), ammonium (NH4), turbidity, electrical conductivity (EC), and water temperature were measured at intervals smaller than 20 minutes. This paper discusses the results at three time scales: annual scale, rain event scale, and single pumping event scale. Mixing of upwelling groundwater and runoff was the dominant hydrological process and governed the temporal pattern of the EC, while N and P fluxes from the polder were also significantly regulated by primary production and iron transformations. The mixing of groundwater and runoff water governed water quality through variation of the intensity and duration of the events. For NH4, the dominant form of N in surface water originating from groundwater seepage, we observed low concentrations during the algae growing season, while concentrations were governed by mixing of groundwater and precipitation inputs in the late autumn and winter. The depletion of dissolved NH4 in spring suggests uptake by primary producers, consistent with high chlorophyll-a, O2, and suspended solids during this period. Total P and turbidity were high during winter, due to the release of reduced iron and P from anoxic sediment to the water column. Rapid Fe2+ oxidation in the water column is the major cause of turbidity. In the other seasons, P is retained in the sediment by iron oxides. Nitrogen is exported from the polder to the downstream water bodies throughout the whole year, mostly in the form of NH4, but as organic N in spring. P leaves the polder mainly during winter, primarily associated with Fe(OH)3 colloids and as dissolved P. Based on this new understanding of the dynamics of N and P in this low lying urban catchment, it is possible to formulate management strategies that can effectively control and reduce eutrophication situation in urban polders and receiving downstream waters.

Response of phytoplankton to heavy pollution of water bodies

2020 ◽  
Vol 49 (3) ◽  
pp. 267-280
Author(s):  
Tatyana Shevchenko ◽  
Peter Klochenko ◽  
Inna Nezbrytska
Keyword(s):  
Inorganic Compounds ◽  
Water Bodies ◽  
Dimensional Structure ◽  
Taxonomic Structure ◽  
Biomass Structure ◽  
Dominant Complex ◽  
Phytoplankton Structure ◽  
The Status ◽  
Nature Park ◽  
Heavy Pollution

AbstractPhytoplankton structure was studied in five ponds (located in the Oleksandriya Nature Park, Ukraine), which significantly differed in the level of their contamination. The concentration of ammonium (NH4+-N) in the studied water bodies was 0.02–74.00 mg l−1, of nitrite (NO2−-N) – 0.002–1.750 mg l−1, nitrate (NO3−-N) – 0.13–58.00 mg l−1, inorganic compounds of phosphorus (Pinorg) – 0.041–0.160 mg l−1, chloride (Cl−) – 35.4–560.5 mg l−1, whereas the content of organic matter (PO and DO) – 4.4–10.4 and 18.0–81.0 mg O l−1, respectively. It has been found that the response of phytoplankton to heavy pollution consisted in changes in its species richness, taxonomic structure, species composition, quantitative indices, numbers and biomass structure, dimensional structure, pigment index, dominant complex, as well as changes in its ecological spectrum. Individual divisions of algae differed in their response to heavy pollution of water bodies, which was conditioned by the specificity of algae metabolism. Bacillariophyta and Cyanoprokaryota proved to be more sensitive to contamination, whereas Chlorophyta and Euglenophyta – more tolerant. The obtained data can be used to monitor the status of water bodies and their biota and to determine the type and intensity of contamination.

Phosphorus elimination of reclaimed water by different kinds of constructed wetlands

2008 ◽  
Vol 8 (1) ◽  
pp. 63-67 ◽  
Author(s):  
Zifu Li ◽  
Zhaojun Huang ◽  
Lu Zhou
Keyword(s):  
Constructed Wetlands ◽  
Good Condition ◽  
Reclaimed Water ◽  
Water Shortage ◽  
Pilot Scale ◽  
Water Bodies ◽  
Phosphorus Concentration ◽  
Wastewater Reclamation ◽  
Nitrogen And Phosphorus ◽  
Operational Conditions

Because of water shortage in Beijing, most ponds and moats there have not enough water. In some times of each year, there is even no water. Therefore, wastewater reclamation and reuse has been paid more and more attention. Reclaimed water used as scenic water such as to supplement city moats, lakes etc. is considered. In this paper, some experiments were done to investigate whether constructed wetlands can reduce the nitrogen and phosphorus concentration further in order to avoid the eutrophication of water bodies through use of reclaimed water for scenic environment. As we know, phosphorus is an important factor to cause algae bloom directly in water bodies. So investigation on phosphorus elimination is a key object for this study, which is composed of two main parts. The first part is laboratory scale testing to select the appropriate substrates of constructed wetlands among some materials. The second part is pilot scale experiments to find out optimal operational condition of different kinds of constructed wetlands. Based on the lab tests, we found that foamy-brick could provide a good condition for plants and microorganisms. According to the pilot scale experiments, it could be concluded that under optimal operational conditions, horizontal flow wetlands could work well. The results of the experiments also showed that integrated vertical flow wetlands are not suitable for phosphorus elimination of reclaimed water.

scholarly journals Aspects of the modern biogens runoff formation in the central part of the Russian Plain

2020 ◽  
Vol 163 ◽  
pp. 03003
Author(s):  
Sergey Dolgov ◽  
Nikolay Koronkevich ◽  
Elena Barabanova
Keyword(s):  
Water Bodies ◽  
Russian Plain ◽  
Nitrogen And Phosphorus ◽  
Runoff Formation ◽  
Biogenic Substances ◽  
Natural Factors ◽  
Cheboksary Reservoir ◽  
Annual Water ◽  
River Catchments ◽  
Kursk Region

The removal of biogenic substances (mineral nitrogen and phosphorus) from river catchments and its modern aspects of formation are considered. A rough estimate of the annual water-biogenic balance for the Linda and Kudma river catchments, which are the tributaries of the Cheboksary reservoir, and the river catchments of the Kursk region is presented. It is shown that the diffuse removal of biogens from river catchments exceeds their removal into water bodies with wastewater. Not only anthropogenic, but also natural factors play an important role in the biogens export to the rivers and waterbodies. Resent changes in biogens removal from catchments are assessed.

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